Planting Deer-Resistant Gardens is Possible : TreeHugger
Deer-Resistant Plants for the Desert Southwest
Catmint - heat, drought, deer and rabbit tolerant perennial
Alliums are drought-tolerant plants that actually prefer to be grown on the dry side. There are no serious diseases or insect pests that bother them. And you won't ever have to worry about rodents or deer, since they seem to have no appreciation for the taste of onions — ornamental or otherwise
Yarrow. Not only does yarrow tolerate heat and drought like a champion, but this easy-growing perennial is also a great cut flower -- and deer, rabbits, and most other pests won't touch it. It comes in a number of varieties with blooms in shades of yellow, orange, red, pink, and white.
Hellebore/Lenten Rose. Perennial. (*SB loves this.*) Easy. Deer-resistant and mostly evergreen, hellebores' divided leaves rise on sturdy stems and may be serrated (like a knife) along the edges. They do best in shade where soil remains moist; some prefer acid or alkaline conditions, depending on variety. Winter interest. 1-4' tall.